There has been some clamoring in the Marvel Cinematic Universe fan community for the X-Men and Avengers to crossover. Plenty of people want it to happen, including Tim Miller, the producer of Deadpool, and Simon Kinberg, the producer of X-Men.
In the past, the crossover was unlikely due to bad blood between Marvel and Fox, but recent changes in executives for both companies have made the crossover more likely. Regardless of the changes, we probably won't be seeing the crossover any time soon.
That's where YouTuber Alex Luthor comes in, Luthor created a supercut trailer, mashing up a number X-men and Avengers trailers to give us a look at what we are missing out on. Check out the trailer below: